Coiled Spring Pin Vs Slotted Spring Pin

The coiled tension pins had been factory installed on my troybuilt horse model tiller.

Coiled spring pin vs slotted spring pin.

Coiled spring pins are flexible after installation so they absorb shock and vibration better than slotted spring pins. I drove to several big box stores and hardware stores to find. They re manufactured to an oversize dimension so that when the pin is inserted into a hole radial forces are exerted that hold the spring pin in place. A spring pin is a hollow split dowel pin that exerts uniform outward pressure when fitted into a nut or shaft hole.

Comparatively slotted pins compress by closing the slot and stress is concentrated 180 degrees opposite the slot. A coiled spring pin also known as a spiral pin is a self retaining engineered fastener manufactured by roll forming metal strip into a spiral cross section of 2 1 4 coils. Spring pins are also easy to insert and remove. A coiled spring pin is a hollow cylindrical pin formed from a 2 coil of either spring steel or stainless steel with swaged chamfers at each end to aid insertion.

Coiled spring pins are flexible after installation so they absorb shock and vibration better than slotted spring pins. Actual diameters are slightly larger than the diameters shown allowing pins to fit tightly when installed. Also called a roll pin the spring pin withstands side loads and rotational friction making it ideal for securing shaft and axle connections. Spirol coiled pins spread compressive stress over the entire pin and do not have stress point concentrations.

They also have higher dynamic load capacities and accommodate wider hole tolerances. Also known as c pins slotted spring pins consist of rolled strips of steel iron aluminum or other metals that expand upon insertion. When spirol coiled pins are installed the compression starts at the outer edge and moves through the coils toward the center. Slotted coiled spring or hollow pins are economical universally used shear type fasteners that are self locking.

They also have higher dynamic load capacities and accommodate wider hole tolerances. After the removal of the coiled pin a small piece of the coiled spring had drop to the floor. The coiled pin is a self retaining fastener which works in a similar manner to a slotted pin but the design allows for the stresses to distribute equally across the coils after insertion. I recently needed to buy some coiled tension pins.